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y y [EMuELEER.. DEIACHABLE THEM] summum ma VEHICLE WHEELS.

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A. if MuELLEa. y DETMHMBL TREAD STRUCTURE FOR VEHICLE WHEElS.

I MWLICRTUN FILED IMQ. 8.1917.

1,235,71 8, l Pmemedmlg; 7, '1917.

2 SHEETS-SHEIT 2.

. l l v I y 'F1/@l0 INI/Ema n s'iArnsnA i onnicn.

inenten ernennen, or' omesso;- ricchioni1 suenen or 01m-crimen To :menne J.

To'alll 'whom it mag/.concern B e it known that I, AUG-ner E. Mmm, n citizen of Argentine"'South America, und

e resident of Chicago, in the county of Cook sind State of Illinois, here invented certain new and useful I m rovements in Detachable Structures or VehicleWheels; :1nd I do'liereby declare that the following is n full,-

clenignnd exect'dcscripton thereof, refer` ence bein had to the accompan'ing draw ings an to the character o, reference miirlred thereon, which form u port of this specification.

'I hisiiivention relates to improvements in trends for vehicle ivheels (sometimes celled lugs) more especially adnptnblc to the solid rims of tractors for agricultural uses, but me; bc otherwise applied.

he improvements constituting the resent invention are especially applicnb e to that type otread shown in my prior U. S..

Letters Patent No. 1,205,653, rented on tlie 21st dey O f November; 1916, w erein the bius or lugs-1 which lie across the 'face of the wheel rim, hre connected together-by members in such a. we? thatthe treed device, res

Lnliole, is .extensiblennd collapsible in the direction of its' length, nncllwherein the snid The .invention i'elntcsznlso to novel menus for connecting the deviceto the wheel rim,

constructed to permit ready nttnclimentof the device to'end its detachment from the wheelrim. U Q i Other objects of the invention are to enorally improve n n'd simplify trend devices for wheelsof this character, and the ini-'ention consists in the combination n nd nrrnnement of parts shown in the drawings and escribed in the s ecficetion, und is pointed i out in the epp'en ed claims.

In the drewings: g Figure 1 is a side elevation of e Wheel -equippcdwithniy novel trend device.

Fig. 2 is en enlarged fragmentary plan view thereof,

Fig. is section on' @im une :P3 of HBUBY oss-Tmp Toor-To I. ImUB'Y, Bem 0F CHICAGO.. mumm- DITACHABLE s'inucunn For; immens-winning;-

Peeeneed Aug. 7, 191,7.

ppiimiun nice 'Innunry si i917. semi xu. 111,240.

Fig. 4 is nii-edge elevation of one of the trend or grip bers.-

Fig. 5 is an enlarged perspective' view, shoii'in the manner of attaching the connecting ers to and detaching tliem froml the treed or grip buis.

Figs. `6 zin-d 7 are fragmentary detiils, illustrating the inunncr of attaching' the ends ofthe tread device to--the'wheel rim.

Fig. 8'is xiside elevation of 'another fox-m of tread or grip ber.

Fi. -9 is e secton'on the liiie 9-9 of ig. 10 is a crosssection on the line 10-10 of ing. e.

T lietiend shown in Figs. 1 -to 7, inclusive, comprises n series of 'grip hars 10 which nrc disposed obliquely Aacross the face of the wheel rim 11 und are rovided at their ends with inwardly turne hooks 12 u'hicli cngage over the sideedges of the wheel rim. The snidhook ends of thegrio bers nre slightly oflset from tlio longitudinal axes of the bn'rs. hy links 14,\vhi cli nre'elso disposed obli ucl-y across the'fnce of the rim sind nt ohique :ingles to the bars 10.

One plinse of my invention resides iii-the manner of4 looseliv or pivntrill) connecting- 'the ends of these links 14 to the ends of buis 10. This connection embraces some kind of n, detachable. lock joint which provides e reliable connection between the links and bers without the. necessity- ,of emiloying rivets or other nstenin me'nns. he connection is also suchtlint tie linksnie bc seperated from the bers only n'hen smi links assume nV given mj definite relation to the bers und which latter relation is not a nom-nl or. operative relation of the piu'ts. Such coniiection muy be mnde ns follows:-

The series' of bars ere connected Erich of tliegeip bxirs 10 is provided neer its cnds, .nnd on the -ftlQe 0f the wheel rim as herein shown, with loops 1 G, the loops nt opposite endsof the links being disposed on respectively opposite sides of the bnr. The

openings in snid loops nrc elongated in direction trnnsylzfrse to the axes ofthe bers and nre di osed. substnntiallyin the direction ofthe4 eng-tbs of the coiinectinglinks 14. Seid loo s 16 are slightly curvedto conforrri'to t e curvature of the Wheel rim.

The links 14 are provided :ittheir ends with outwardly bent lu 1B sind' said lugs terminate in cross-hee 19. Said cross w'hen'said links 'nre inthe cros's'hends of the greater than the width of the openings' in the loops 16,- rbut are 4:slightly shorter than the ,oflsiidoponingn The inks More connected-to the loops of thebers 10 when thesaid links assume the positions shown in Fig. 5,--thet is .to say,'

p'ions to dispose in the lon r ax'es ofthe o gs in said'loopiz.- 'ter -nid headed l have thun been on'gage'd with the loops, e links are turned to their operativepoeih'ons, or that obliquely trannattached atrth'eir ends to the rim {erseto'th'e bm 10 and the cross heads i9 lie trannversellyxecroes the openings in the loopsl so t t' detachment of the linlci'i from the bars cannot occur. The a 4leeof the longer lengths of the loops are suc 'relatively the exes of the bar s' 10' thst said' linlm cannot swing for enoughrtowardthe .bin-to permit detwhmpnt ofthe links 'from o bm: V...mi extensible treuilormed h Therefore when the colla. lfble the'se es of gipberrjere'folde together for shipment or storm. thergzrte becoming detached." 'nid series of connected the medium of shorter links .21, 22 best or the like. As hereinehown the rovided at itsfree end withan inwardl bron with s heeded interl shown in Fig-s. 2, 61nd Y. A The link 21 is itself Vdetwl'mbl interlooked to the wheel rim by mexns w 'oh require no bol 'rii'its 2A is portion hich extends throng 2i in Wheel rim 11, end s terminal lug 25'.whicli lies inside .the rim is ernllyplarallel to the main body of the 21. e-siid 21 may be readily 'engnged .in'th .the opening 24 wrlien the assumes an' oblique eng e relatively Ito-the rim,.and when the link is hid dat o'nthe rim,

g l "lphof an adjacent grip bar 10.

e linlc 22 ie' also videdlt its other end vri ertur'ed lu 27. Through this latter `lu 7 and throuy an -oblique opening in the w eel rim etten l. fastening bolt 28, the h'ead of the bolt the lu 27. The screw threaded en of t e bolt 2 extends through a walsher 29, made of shape to fit the inner hoe of the wheel rim rnd having an'end face forent with the, tightening nut of ui bolt. The bolt end nut aond meins there is no likelihood of .lions are.

4spective bars eo u to lie whereby a proper ltension-'mn' be exerted on the s ctnre to hold therein@ firmly hon the'rim.

Tliegrip ber mi'iy be made of any desired Cross Section o r royided with suitable forni: ot dienteY or. en t with-the round. ii hoifn in F1 1 to 6 inclusive e bers ne proyided wit sooo -lke spurs or lnthe'y'onoeve faces og hich face in the direction' .ogg-rotation of the wheel. Inl Figs. 8 end 9 is' shown o 'bar 82 which is thickened at itemiddle to produce a. transversely conveenrodgagin g fm and this face is v uoe a ent or xn edge 33 35mm gw'th .conn ons een e grip bus and links areoset from the groundengiaging fac of the grip bers, so that said connections are thereby protected from first and direct contactwi'th lurd-roadwa s, rocks end the like, which tend to break" e interi parte.A I!! Figl- 1 11u12 m shown agrip tension which il adopted for use on sin y or andy ground. VSaid extensions ere in latter may be madeof castfietal. 'he ex4 teiunom are of T hnpe eros section and :with the Het faces of their webs 86 directed flush rith the flioe of the el porti ofthe grip bere 10 which' wheel rim, nid said webs are trengthened by the engee87 which lie along the centers of the wedba construction producen n very'ngi extensionL e area of beenng faoeandeeiently reigned, and by'mems which doecnot 'add n to the weight and ooqt of the device. Seid exten- 'atobliquenngleeitothere-` A monili' plrlllel to the axis of rotation of wheel.

In some instances .it is desirable to provide means for clearing the' wheel rim and the trend ofmud which tends to cling or accumulate on said4 tread. I have herein shown one form of self-cleaning device which my be employed.. It consists of ring plates 88 Vwhichv lie between the conlnliieting lnl 14 and the bars 10 andare herein shoilm a attached to said bers. -Suid `spi-iii pht'es are raised from their inta of atte ment above .the rim but nro, oiiwivei"`- within the extreme outer' faces or edgeoi the grip bars 10, as shown in Fi 10. ASaid plateirmlr be st'tached to the Minany suitab manner, as by the rivets :c lici'wn.4

The platee are of auch resiliency andm so arranged as to hold themselves spaced from 'the rim. -Tlie'cleming plates on the lower `ride of thewheelhowever are werdly againiitzthe rim uid #hen they riso from the ground on the. rising aideof the wheel they spring outwardly and-ha'ye -the Heet to loosen dirt tendin to clin The constant. movement o -the ph there4 fore, prevents ologging or ciiking of mnd on thereto the rim. VIt Will be understood that/the interlocking connection -between the grip bars and links may also be varied within the spirit ofthe claims hereto appended.

I claim- 1. A tread structure for vehicle Wheels, comprising'a series of grip bars extending l. across the wheel rim and shorter members transverse. to the bars and extending beitween andV detachably interlocked to the bars neartheir ends on the face of the rim by connections `Which are oset inwardly from the road-engagingfaces .of the. grip bars.

2. A tread structure for vehicle .wheels which is extensible and collapsible iii-the drection of its length, comprising a series of grip bars adapted to extend transversely acrossthe Whe'elrirn and having ground engaging-- saliente and treadforming links shorter-'than said bars 'which extend between the'grip. bars, with means for detachably interlockingv the'm at their ends to the ends of 'said grip bars between the edges of the saliente and the rim. v l

` 3. A treadl tructure for vehielewheels comprising a series of gripx bars adapted to extend diagonally across t ewheel--rim and having'hnked .ends to engage overrth'e edges of' the rim,l` 'nd provided near their ends with openings. and links adapted to extend diagonally across the wheel rim and provided at their ends with enlargements 'to detachably and interlcckingly 'engage said, openings, each link being thus connected to opposite ends of neighboring bars` 4. A tread structure for vehicle Wheels comprising a, series of grip bars adapted. .to extend diagonally across the Wheel rim, links adapted to lextend also diagonally across the' Wheel rim between said bars and detachable interlocking means between said` links and bars constructedpwith means to permit the links to siving toward and from the bars-in their planes, and to permit fletachment of the links from the bars only when the links approach parallelism to said bars.-

5. A treadstructure for vehicle Wheels ycomprising a, series of bars adapted'to ex- -grip bars tend diagonally across the `Wheel rim, links extending between said bars and diagonally transverse thereto, the bars being .rovided near their ends with loops and the lnks be- 4 ingV provided with hooks to detachably interlock with said loops, said .loops being elongated in a direction obliquely transverse with headed terminals which, in thenormal positions of the links, lie transversely across the loops.

6. An endwise collapsible tread structure for vehicle Wheels comprising bars adapted to extend transversely across the Wheel rim, with means to loosely connect them together and means to attach the structure to the Wheel rim embracing a link having means tn detachably interlock it to an end bar of the series and provided with an` oifset end to engage an opening in thewheel rim.

A tread structure for vehicle .iivheels which is extensible and collapsible inthe direction of its length, comprising a series of extending transversely across .the wheel rim andprovided at their ends with hooks to engage over the edges oi the rim, and means extending between and flexibly connected to saidvl grlpbars, said grip bars being formed beyond said'hooks at one side of the rim With road engaging extensions.

'-S. A grip bar for treadstructures for vehicle Wheels adapted to `extend diagonally across tliefivlieel rim and provided with rim engaging hooks and provided also atl one end beyond' an adjacent hook with` an extension disposed at an angle yto tliel'ongr tuclinal axis oi' the grip bar and having a broad=road engaging face.

9. A grip bar for tread structures of vehicle wheels adapted to extend across the Wheel rii'n and provided with' hooks to en# gage over the edges of the Wheel rim, said grip bar being provided at one end with a T-shape road engaging extension.

ln witness whereof I claim the foregoing as nn' invention, l hereunto append my signaturc'in the presence of two lWitnesses at Chicago, Illinois, this 6th day of January,

AUGUST E. MUELLER. lVitnesses-z lV. L. HALL, A. E. VALBRIDGE.

6a;4v to the axes of the bars and the bars provided i 

